Spraying and beating head



Sept. 18 1923. 1,468,118

J. C. MYaCLACHLAN SPRAYING AND BEATING HEAD Filed 001:54, 1919 Jetremlea sept. i, reza,

JoHN c. LAC raonnc'rscom or sT. PAUL, MINNESOTA, AssIeNoR To STANDARD Toon or sT. PAUL, MINNESOTA, A CORPORATION or DELAWARE SPRYING AND BATING HEAD.

pplieation le October 4, 1919. Serial No. 328,495.

To all whom t may con/cem:

Be it knownthat lf JOHN C, MAoLAoH- LAN a citizen of the nited States, residing at Sit. Paul, in the county ofl Ramsey and State of Minnesota, have invented certain v new and useful Improvements in Spraying l and Beating Heads; and I do hereby declare the following to be a full, clear, `and exact description of the invention, such as will e11- able others skilled in the art to which it appertains to make and use the same.

My present invention has for its object to provide an improved spraying and beating ldevice for reducing to finely divided dry form, such substances as milk, butter milk, and various food substances which have first been reduced to a heavy liquid condition, or certain other substances which have been reduced to aheavy pasty form, which may be designated as a semi-liquid condition. 'ln

producing a milk substance in a dry powdered' or granular form, for example, 'the milk should be first reduced to the consistency of the heavy condensed milk. However, the degree of iineness to which the food substance will be reduced by this device will be dependent largely upon the extent to which the substance has first been condensed.

This'invention is directed particularly to the provision of adevice. which will beat and spray the heavyr uid substance and which will. permit the use of a 'stationary or non-rotary discharge head for the dellvery l of such substance to the beater that is arranged to rotate above the same.

The preferred form of this improved device is illustrated in the accompanying drawings wherein like characters indicate like parts throughout the several views.

Referring to the drawings:

Fig. 1 is aI view invertical section takenl axially through the combined spraying and beating head and showing also means for the delivery of the substanceto the discharge head i Figi. 2 is a horizontal section chiey on'the line 2-2 of Fig. 1, but with some parts broken 'away and some parts' sectioned on` the line w-- of Fig. l; and

Fig. 3 is a fragmentary view showing in. side elevationv a portion of the combined spraying and beating device.

The beater is carried at the lower Iend of an upright shaft or spindle 4, which, as shown, is journaled in suitable bearings 5 on a supporting spindle 6, which, in turn is rigidly secured to an overhead removable .bearing plate '7 that constitutes a part of the top 8 of a large hot air chamber, `not fully shown, but within the upper portion of which the beater is arranged to rotate. The beater, as shown, and as preferably designed, comprises fan approximately disk-like' bottomplate 9 that is rigidly secured to the lower end of the spindlel. Rigidly secured at the rim portion of the bottom plate 9 by means of circumferentially' spaced nut-equipped tie bolts 10, is an annular` top plate 11; and rigidly secured between and to the rim portions of the two plates 9 and 11 arebeater 'blades 12 that are preferably slightly curved and forwardly inclined in respect to the direction of rotation of the head. Moreover, the rim portionof the plates y9 and 11 is preferably downwardly inclined in an outward direction so that they tend to throw outward and downward an. umbrella-like shower of finely beaten material intov the hot .drying chamber. Between the blades l2 the rim ofl lower plate 9 is cut away to permit downward passage of the beaten material.

Here it should be noted that the bearings 5 are, as shown, of the ball bearing type, and that the upper plates of each bearing are Secured' to the spindle 4, so as to hold the latter against downward movement while free to rotate. rl`he spindle 4 will be rotated at high velocity but in such manner, as for example by powerdriven belt, not shown, but which would run over a pulley 13 on the upper portion of said spindle.

rlhe discharge head 14 for the heavy or semi-fluid material, which, as already stated, is of annular form, loosely surrounds the lower portion of the spindle 4 and is rigidly @te secured to a tubular hanger 15, the Hanged upper end of which, as shown, is bolted directly to thelbearing plate 7. The outer wall of the head 14 is preferably made bellshaped in vertical section, and at its low r il@ portion is shown as provided with a plura f ity of radially extended circumferentially spaced-discharge oriiices L16, the outer extremities of which are quite close to the inner extremities of the beating blades 1i?, but

vare located` far above the underlying portion of the bottom plate 9 of the beater head.

y The condensed milk or other heavy liquid to be treated may be supplied from any suitable source, as for example, from an overhead vat 17 provided with a depending disl the formof a multiplicity of streams,

'- beating blades -will violently strike thesel charge pipe 18 that opens into the portion of the discharge head 14.

The operation of the above device is substantially as follows:

The substance to be treated and which we ma assume to be condensed milk, will be upper I. dellvered by gravity or pressure, or they combined'action of both, from the vat or source of supply, in'to the hollowy discharge head 1.4, and from the latter, will be projected in through the discharge orifices 16, and 'in passing from said orifices, will'be projected outwardly and downwardly into the space between the lbeating blades 12. Hence, the

projected streams -of condensed milk, and by combined beating action and the action of centrifugal force, will disintegrate the heavy'iiuid substance and project the same violently outward into the hot drying air in the form of an -umbrella-like shower;

and the substance thus beaten and projected, 1n its precipitation through the hot air, will be thoroughly dried so that it will reach the bottom of' the drying chamber in the .\form of a finely divided dry substance.

This -nely divided dry substance will not be a very fine powder, butv on the contrary, when the extent of preliminary condensat1 on 1s properly carried out, thebeating devlce will reduce such substance to a granular form capable of being very easily dissolved even 1n cold water. The beating action should be produced by very high velocity of the rotaryv beater, and in ypractice vit is customary to rotate the same at approximately 5000 revolutions per minute. In the use of a non-rotary discharge head in connection with the beater rotatable around the same, aside-from mechanical advantages in the lemployment of. a non-rotary'discharge head, there 1s an advantage due to the `fact that'the heavy liquid dischargedv therefrom' will not vbe given rotary motion with the beater, and hence, will be struck by the y beater -blades with much greater violence' ihan .where the discharge head is arranged o rotate'- with the beater blades.A

' l What'I- claim is:

'1. A sprayer head for a drying apparatus A601 (for fluids having in ycombination a fixed ischarge head havin means arranged to project the iuld free y Aoutwardly and a revolving .head surrounding said fixed head and provided with cireumferentially ar- .ranged spaced blades disposed about Sfad.

means ,to intercept and beat said freely projected fluid.

2. A sprayer head for a drying apparatus for iuids having in combination a fixed discharge head having means arranged to project the fluid freely outwardly and a revolving head surrounding-said fixed head hav-l ing top and bottom plates spaced above andV below said means, and spaced circumferencharge head comprising a closed vessel havf ing spaced holes there-around through which the fluid is projected freely outwardly, and a revolving head surrounding said fixed head and provided with circumferentially arranged blades disposed about said holes to intercept and beat the freely projected fluid. j

4. A d Vice of the class described having in combination a fixed discharge head' hav-- ing means to project the material outwardly and a beater member surrounding the same comprising an upright rotary spindle, a disk-like plate secured to said spindle below said discharge head, a second plate spaced above and secured to said first mentioned plate and a plurality of beater blades disposed between said plates and, spaced fromr and surrounding said means,I said beater blades beingcurved forwardly in the dlrection of rotation in horizontal section, saidv beater member arranged to rotate about said discharge head and to intercept and violent-v ly beat the projected materia r5. A device oflthe class described having. in combination a fixed ydischarge head `and a beater member comprising an upright rotary spindle, a vdisk-like plate secure to said spindle below the discharge head, a plate spaced above and secured to said rst mentioned plate and a plurality of beater blades carried between said plates projectingfin a general radial direction, said blades being curved forwardly inthe direction'of rotation in horizontal section and bein curved downwardly and rearwardlyfrom t e upper to the lower plate in, vertical section and adapted to rotate aboutsaid discharge head. l

6. A' sprayer device for a. drying apparatus for liuids having in combination a fixed'disch'ar e head lcomprising a general frusto-conica closed vessel having lts .riphery curved outwardly and downwardley and being provided with -a series of holes about lts lower portion\.through which the Huid 1s projected radially outwardly, anda revolving head surrounding said iixed head and provided with circumferentially 'arranged spaced blades disposed about. and

spaced from saidholes whereby the proprojection of said jets adapted to intercept jected fluid will be intercepted and violently and beat said uid.

beaten by said blades. In testimony whereof I aflix my signature 7. A distributing head fora drying apin presence of two witnesses.

5 paratus for fluids having in combination JOHN C. MACLACHLAN.

means to project said fluid ou wardly in a' Witnesses plurality of radially directed jets, and ro- CLARE DEMABEST,

tating means extending across the line of BRNIGE G. BAUMANN. 

